Improvement in embossing



WEERT 1. CHUTE.

Improvement in Embossing.

N0. 122,569. l VPaltentedjamf,1872.

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l 111 1 'Il UNITED STATEs dETEET @Enron IMPROVEMENT IN EIVIBOSS-ING.

Specification forming part of Letters Patent No. 122,569, dated January9, 1872.

Process of Embossing.

My invention consists in the raising of projections on thin material bysubjecting it to the combined action, under pressure, of a perforatedplate and an elastic yielding bed, substantially in the manner describedhereafter, my invention being a cheap substitute for the ordinaryvprocess of embossing by costly dies and matrixes.

In the accompanying drawing, Figures l and 2 are sectional viewsillustrating my process of embossing; Fig. 3, a specimen of the productsofthe process; Fig. 4., a plate which may be used in practicing theprocess; and Figures 5 and 6, sectional diagrams illustratingmodifications of `my invention.

One of the simplest products of my inven-` tion is a medallioncard-photograph, Fig. 3- that is, a photograph mounted on a card, A, andafterward embossed so that the oval portion a, containing the picture,shall have a raised and rounded surface, this being the medallionportion of the picture raised from the card A. The views, Figs. l and 2,illustrate my process as applied to the raising ofthe medallion on thecard. B is a block of rubber placed on the bed of any suitable press,and D is a metal plate, in which is cut an oval opening, a', of the sameform and dimensions as the desired oval projection on the card. A, inFigs. 1 and 2, is a section of the card, Fig. 3, on the line l 2, thelatter ligure being the actual size of the card, while, in order toillustrate my invention fully, Figs. l and 2 are double the actual size.

On placing the card A on the rubber block and the plate on top of thecard, and then subjecting the whole to pressure, the card and rubberwill be compressed by the plate, as shown in Fig. 2; but so much ofrubber and card as is within the edges of the oval opening will be'inoreor less relieved from this pressure, the

eiiects of the pressure being the learst at the center of the ovalopening and becoming more and more perceptible toward the edges of thesame; hence so much of the rubber and card as are within the edges ofthe opening will assume the curved form represented in thecrosssectional view, Fig. 2, the curve being gradual on all sides fromthe edge of the oval opening to the center of the same 5 hence an ovalmedallion, corresponding in shape with that of the oval hole in theplate, will be formed on the face of the card, a medallion which, by theusual process of embossing, would require the combined action of anexpensive die and matriX.

The plate D may, if desired, be composed of several thicknesses of paperlined beneath with a thin plate of metal or other hard material.

My invention, however, is not restricted to the embossing of medallionson photographic cards, but may be applied to many other manufactures. Aplate, Fig. 4l, for instance, with openings x a: .r x and y, may be usedfor embossing the leather or cloth covers of photographic albums orother books, the cover, af-

ter being subjected to pressure between the plate and a rubber block, asdescribed above, having rounded elevations corresponding in shape withthe said openings.

The ilat portions of the cover, or even the raised portions of the same,may have minor ornamentations imparted to them by the ordinary embossingprocess or the plate D itself may have ornamental projections for makingornamental indentations in the flat or unraised portions of the cover ofa book or of any other object.

My invention may be applied to the embossing of thin metal plates, or,in fact, any thin material which will yield readily to the combinedaction of a perforated plate and rubber block under pressure. Thedesired pressure may be imparted by rollers, as shown in Fig. 5, theupper roller being rigid and the lower roller clothed with rubber. Aperforated plate, Gr, is placed above the thin material H to beembossed, and the two together are passed between the two rollers, theresult being the raising on the material H of rounded projectionscorresponding in shape with the perforations oi' the plate.

If desired, the material H to be embossed maybe interposed between theperforated plate Gr and a strip, I, of rubber, and the Whole passedbetween two rigid rollers, J and J with a like result.

I claim as my invention-l to this specification in the presence of twosub- The raising of proiectlons on thm mate-rml scribing witnesses.

by subjecting it to the combined action7 under ROBERT J. CHUTE.pressure, of :t perforated plate and an elastic yielding` bed or roller,substantially in the man- Witnesses:

nel` described. H. HOWSON,

Intestimoliywhereof I have signed myname WM. A. STEEL. (54)

